A Spectral Line of a Certain Star Is Observed to Be

question 62

Multiple Choice

A spectral line of a certain star is observed to be "red shifted" from a wavelength of 500 nm to a wavelength of 1500 nm.Interpreting this as a Doppler effect, the speed of recession of this star is:

• A)0.33c
• B)0.50c
• C)0.71c
• D)0.80c
• E)c

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Definitions:

Decisive

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